diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 332957f..4af28bc 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,6 +1,16 @@
 name: Test/build
 
-on: [push, pull_request]
+on:
+  workflow_dispatch:  # Allows manual triggering
+  push:  # only build on pusheess to the main branch
+    branches:
+      - master
+  pull_request:
+
+# Stop current actions if there is a new push to the same branch
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
 
 jobs:
   build:
@@ -9,8 +19,18 @@ jobs:
       max-parallel: 4
       fail-fast: false
       matrix:
-        python-version: [3.8, 3.9, '3.10', 3.11]
+        python-version: [3.11, 3.12]
         platform: [ubuntu-latest, macos-latest, windows-latest]
+        # The include below adds jobs on older versions of python,
+        # but just on one platform. Windows is probably the most widely
+        # used for vpython, so test on that.
+        include:
+          - python-version: "3.8"
+            platform: windows-latest
+          - python-version: "3.9"
+            platform: windows-latest
+          - python-version: "3.10"
+            platform: windows-latest
     runs-on: ${{ matrix.platform }}
 
     steps:
@@ -62,7 +82,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [cp37-cp37m, cp38-cp38, cp39-cp39, cp310-cp310, cp311-cp311]
+        python-version: [cp38-cp38, cp39-cp39, cp310-cp310, cp311-cp311, cp312-cp312]
     runs-on: ubuntu-latest
     env:
       py: /opt/python/${{ matrix.python-version }}/bin/python
@@ -84,9 +104,9 @@ jobs:
            source .env/bin/activate && \
            echo -e "\e[1;34m Install dependencies \e[0m" && \
            python -m pip install --upgrade pip && \
-           pip install pytest Cython wheel && \
+           pip install pytest Cython wheel build && \
            echo -e "\e[1;34m Build wheel \e[0m" && \
-           python setup.py bdist_wheel && \
+           python -m build && \
            echo -e "\e[1;34m Install vpython \e[0m" && \
            pip install . && \
            echo -e "\e[1;34m Run tests \e[0m" && \
diff --git a/.github/workflows/upload_pypi.yml b/.github/workflows/upload_pypi.yml
index 273584e..debbea2 100644
--- a/.github/workflows/upload_pypi.yml
+++ b/.github/workflows/upload_pypi.yml
@@ -11,7 +11,7 @@ jobs:
       max-parallel: 4
       fail-fast: false
       matrix:
-        python-version: [3.7, 3.8, 3.9, '3.10', 3.11]
+        python-version: [3.8, 3.9, '3.10', 3.11, 3.12]
         platform: [macos-latest, windows-latest]  # Wheels on linux below
     runs-on: ${{ matrix.platform }}
 
@@ -48,7 +48,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v5
       with:
-        python-version: 3.10
+        python-version: 3.11
     - name: Stable with rustfmt and clippy
       uses: actions-rs/toolchain@v1
       with:
@@ -61,7 +61,7 @@ jobs:
     - name: Python wheels manylinux build
       uses: RalfG/python-wheels-manylinux-build@v0.7.1
       with:
-        python-versions: 'cp37-cp37m cp38-cp38 cp39-cp39 cp310-cp310 cp311-cp311'
+        python-versions: 'cp38-cp38 cp39-cp39 cp310-cp310 cp311-cp311 cp312-cp312'
         build-requirements: 'setuptools cython setuptools_scm'
     - name: Build and publish wheel
       env:
@@ -79,7 +79,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v5
       with:
-        python-version: 3.10
+        python-version: 3.11
     - name: Set up QEMU
       id: qemu
       uses: docker/setup-qemu-action@v3
@@ -90,7 +90,7 @@ jobs:
     - name: Python wheels manylinux build
       uses: RalfG/python-wheels-manylinux-build@v0.4.2-manylinux2014_aarch64
       with:
-        python-versions: 'cp37-cp37m cp38-cp38 cp39-cp39 cp310-cp310'
+        python-versions: 'cp38-cp38 cp39-cp39 cp310-cp310 cp311-cp311 cp312-cp312'
         build-requirements: 'setuptools cython setuptools_scm'
     - name: Build and publish wheel
       env:
@@ -106,7 +106,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v5
       with:
-        python-version: '3.10'
+        python-version: '3.11'
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
diff --git a/vpython/test/test_namespace.py b/vpython/test/test_namespace.py
index 619a265..8287cd9 100644
--- a/vpython/test/test_namespace.py
+++ b/vpython/test/test_namespace.py
@@ -177,6 +177,11 @@ def test_names_in_base_namspace():
         for name in ['cbrt', 'exp2']:
             api_name_set.add(name)
 
+    # Python 3.12 adds one more new math function.
+    if python_version.major == 3 and python_version.minor >= 12:
+        for name in ['sumprod']:
+            api_name_set.add(name)
+
     print(sorted(api_name_set - current_names))
 
     # We may have added new names, so start with this weaker test